English to French Tech/Engineering Patents (in a patent) Manufacturing a Two-Sided Product with an Integrated Device including Microscale Structures

The control and management of skew is important to the aesthetics of some devices, notably those devices forming or including micro optical security features.
Moire magnification is a relatively well known phenomenon for viewing aesthetics and security features but it can also be used as a skew detector. For example, on one surface of the web, a periodic structure can be formed.